GOST 1139-80. Basic Norms of Interchangeability. Straight-Sided Splined Joints. Dimensions and Tolerances

GOST 1139-80

INTERSTATE STANDARD

BASIC NORMS OF INTERCHANGEABILITY

STRAIGHT-SIDED SPLINED JOINTS

DIMENSIONS AND TOLERANCES

Basic Norms of Interchangeability STRAIGHT-SIDED SPLINED JOINTS Dimensions and Tolerances Basic norms of interchangeability. Straight-sided splined joints. Dimensions and tolerances	GOST 1139-80

Effective date 01.01.82

This standard applies to general-purpose splined joints with a straight-sided tooth profile, arranged parallel to the axis of the joint, with the sides of the profile parallel to the axis of symmetry of the spline outside the circle of diameter d. It establishes the number of teeth, nominal dimensions of joints of light, medium and heavy series, and tolerances for joints centered on the inner diameter, outer diameter, and sides of the teeth.

This standard does not apply to special splined joints that differ from those specified by this standard in nominal dimensions or type of centering.

This standard does not apply to products designed before 1980.

This standard fully complies with ST SEV 6844-89.

(Revised edition, Amendment No. 2).

1. DIMENSIONS

1.1. The basic dimensions and number of teeth of splined joints correspond to those shown in the drawing and in Tables 1 to 3.

Table 1

Light series dimensions, mm

z × d × D	Number of teeth z	d	D	b	d₁, not less than	a, not less than	c		r, not more than
							Nom.	Limit deviation
6 × 23 × 26	6	23	26	6	22.1	3.54	0.3	+0.2	0.2
6 × 26 × 30	6	26	30	6	24.6	3.85	0.3	+0.2	0.2
6 × 28 × 32	6	28	32	7	26.7	4.03	0.3	+0.2	0.2
8 × 32 × 36	8	32	36	6	30.4	2.71	0.4	+0.2	0.3
8 × 36 × 40	8	36	40	7	34.5	3.46	0.4	+0.2	0.3
8 × 42 × 46	8	42	46	8	40.4	5.03	0.4	+0.2	0.3
8 × 46 × 50	8	46	50	9	44.6	5.75	0.4	+0.2	0.3
8 × 52 × 58	8	52	58	10	49.7	4.89	0.5	+0.3	0.5
8 × 56 × 62	8	56	62	10	53.6	6.38	0.5	+0.3	0.5
8 × 62 × 68	8	62	68	12	59.8	7.31	0.5	+0.3	0.5
10 × 72 × 78	10	72	78	12	69.6	5.45	0.5	+0.3	0.5
10 × 82 × 88	10	82	88	12	79.3	8.62	0.5	+0.3	0.5
10 × 92 × 98	10	92	98	14	89.4	10.08	0.5	+0.3	0.5
10 × 102 × 108	10	102	108	16	99.9	11.49	0.5	+0.3	0.5
10 × 112 × 120	10	112	120	18	108.8	10.72	0.5	+0.3	0.5

Table 2

Medium series dimensions, mm

z × d × D	Number of teeth z	d	D	b	d₁, not less than	a, not less than	c		r, not more than
							Nom.	Limit deviation
6 × 11 × 14	6	11	14	3.0	9.9	-	0.3	+0.2	0.2
6× 13× 16	6	13	16	3.5	12.0	-	0.3	+0.2	0.2
6 × 16×20	6	16	20	4.0	14.5	-	0.3	+0.2	0.2
6 × 18×22	6	18	22	5.0	16.7	-	0.3	+0.2	0.2
6 × 21 × 25	6	21	25	5.0	19.5	1.95	0.3	+0.2	0.2
6 × 23 × 28	6	23	28	6.0	21.3	1.34	0.3	+0.2	0.2
6 × 26 × 32	6	26	32	6.0	23.4	1.65	0.4	+0.2	0.3
6 × 28 × 34	6	28	34	7.0	25.9	1.70	0.4	+0.2	0.3
8 × 32 × 38	8	32	38	6.0	29.4	-	0.4	+0.2	0.3
8 × 36 × 42	8	36	42	7.0	33.5	1.02	0.4	+0.2	0.3
8 × 42 × 48	8	42	48	8.0	39.5	2.57	0.4	+0.2	0.3
8 × 46 × 54	8	46	54	9.0	42.7	-	0.5	+0.3	0.5
8 × 52 × 60	8	52	60	10.0	48.7	2.44	0.5	+0.3	0.5
8 × 56 × 65	8	56	65	10.0	52.2	2.50	0.5	+0.3	0.5
8 × 62 × 72	8	62	72	12.0	57.8	2.40	0.5	+0.3	0.5
10 × 72 × 82	10	72	82	12.0	67.4	-	0.5	+0.3	0.5
10 × 82 × 92	10	82	92	12.0	77.1	3.00	0.5	+0.3	0.5
10 × 92 × 102	10	92	102	14.0	87.3	4.50	0.5	+0.3	0.5
10 × 102× 112	10	102	112	16.0	97.7	6.30	0.5	+0.3	0.5
10 × 112 × 125	10	112	125	18.0	106.3	4.40	0.5	+0.3	0.5

Table 3

Heavy series dimensions, mm

z × d × D	Number of teeth z	d	D	b	d₁, not less than	c		r, not more than
						Nom.	Limit deviation
10 × 16 × 20	10	16	20	2.5	14.1	0.3	+0.2	0.2
10 × 18 × 23	10	18	23	3.0	15.6	0.3	+0.2	0.2
10 × 21 × 26	10	21	26	3.0	18.5	0.3	+0.2	0.2
10 × 23 × 29	10	23	29	4.0	20.3	0.3	+0.2	0.2
10 × 26 × 32	10	26	32	4.0	23.0	0.4	+0.2	0.3
10 × 28 × 35	10	28	35	4.0	24.4	0.4	+0.2	0.3
10 × 32 × 40	10	32	40	5.0	28.0	0.4	+0.2	0.3
10 × 36 × 45	10	36	45	5.0	31.3	0.4	+0.2	0.3
10 × 42 × 52	10	42	52	6.0	36.9	0.4	+0.2	0.3
10 × 46 × 56	10	46	56	7.0	40.9	0.5	+0.3	0.5
16 × 52 × 60	16	52	60	5.0	47.0	0.5	+0.3	0.5
16 × 56 × 65	16	56	65	5.0	50.6	0.5	+0.3	0.5
16 × 62 × 72	16	62	72	6.0	56.1	0.5	+0.3	0.5
16 × 72 × 82	16	72	82	7.0	65.9	0.5	+0.3	0.5
20 × 82 × 92	20	82	92	6.0	75.6	0.5	+0.3	0.5
20 × 92 × 102	20	92	102	7.0	85.5	0.5	+0.3	0.5
20 × 102 × 115	20	102	115	8.0	94.0	0.5	+0.3	0.5
20 × 112 × 125	20	112	125	9.0	104.0	0.5	+0.3	0.5

Notes:

1. Design 1 is given for the manufacture of shafts of light and medium series joints by the rolling method. Shafts of heavy series joints are not manufactured by the rolling method.

2. Splined shafts of designs 1 and 3 are manufactured with centering on the inner diameter; design 2 — with centering on the outer diameter and the sides of the teeth.

(Revised edition, Amendment No. 2).

1.2. (Deleted, Amendment No. 2).

1.3. The chamfer at the grooves of the sleeve bore may be replaced with a rounding of radius equal to the chamfer value c.

2. TOLERANCES

2.1. General provisions, tolerances and basic deviations of dimensions d, D, b of the splined joint — according to GOST 25346.

2.2. Tolerance zones of splined shafts and sleeves for forming fits under various types of centering correspond to those specified in Tables 4, 5, and 5a.

Tolerance zones enclosed in square brackets are recommended, and tolerance zones marked with asterisks are preferred among the recommended ones (tolerance zones used in ISO).

Table 4

Tolerance zones of splined shafts and sleeves for forming fits with centering on the inner diameter

Type of joint			Sliding										Fixed
Tolerance zones	d	Sleeve	H8	[H7]*									[H7]*
		Shaft	e8	[f7]*					[g6] [g7]*			h7	[h7]*		[js6] js7			n6
	b	Sleeve	[D9] D10 [F10]	[D9] [F10]				[H9]* [H11]*	D9 F10		[H9]* [H11]*	D9 F10	H8 H9* H11*		F8 F10			F8 F10
						D9	F8			F8						D9	H8		H8
		Shaft	d9	e8	f7		f7		f8	f7	[d10]*	f8	h6	[h7]	h7	[js7]		h7
							f8	[d10]*
			e8		f8	h9	h7	[f9]*	h8						[js7]	[K7]	[js7]		js7
			[e9]	e9	[f9]		h9		h9	[h7]	[f9]*	[h9]	h8	[h10]*	[K7]			[js7]

Notes:

1. Tolerance zones F10 and H11 are used only for hardened, non-ground sleeves.

2. Tolerance zone h9 is used for finish milling of non-hardened splined shafts.

Table 5

Tolerance zones of splined shafts and sleeves for forming fits with centering on the outer diameter

Type of joint			Sliding							Fixed
Tolerance zones	I)	Sleeve	H8 H10 H11	[H7]						[H7]
		Shaft	d8 e8 h7	[f7]			[g6]		[h7]	[js6]	n6
	b	Sleeve	D9 F8 H11	[D9] F8 [F10]	[F8]		D9		D9	D9	D9
						D9		F8
					[F10]		[F8]		F8	[F8]	F8
		Shaft	d8 e8 d10	[d9] e8 [h9]	[f7] [f8] h8	f7 h8 h9	f7	h8	f7	h8	h8
							h9
										[js7]	js7

Notes:

1. Tolerance zones H10 and H11 are used only for hardened sleeves that are not subject to further processing.

2. Tolerance zone h9 is used for finish milling of non-hardened splined shafts.

Table 5a

Tolerance zones of splined shafts and sleeves for forming fits with centering on the sides of the splines

Type of joint	Sliding							Fixed
Tolerance zones of dimension	Sleeve	[D9]		F8		[F10]		D9	[F8]		F10
	Shaft	d9	[e8]		e9		[f8]	[js7]		k7
		f9	h8		h9

Note. It is recommended to use tolerance zone e9 for non-hardened shafts.

(Revised edition, Amendment No. 2).

2.3. Recommended fits of shafts and sleeves are given in Appendix 1.

2.4. Tolerance zones of non-centering diameters correspond to those specified in Table 6.

Table 6

Non-centering diameter	Type of centering	Tolerance class
		Shaft*		Sleeve
		Sliding joint	Fixed joint
d	By D or b	-	-	H11
D	By d or b	[a11]* d10 f9	[a11]* f9, H10	[H10]*, H11 H12

• Diameter d is not less than diameter d₁.

(Revised edition, Amendment No. 2).

2.4.1. Tolerances of symmetry of the sides of the splines, expressed diametrically relative to the axis of symmetry of the centering element, correspond to those specified in Table 7.

Table 7

b	2.5; 3	3.5; 4; 5; 6	7; 8; 9; 10	12; 14; 16; 18
IT7	0.010	0.012	0.015	0.018

(Added, Amendment No. 2).

2.5. If the length of the splined shaft or bushing exceeds the length of the composite gauge, the permissible deviations from parallelism of the sides of the shaft teeth and bushing grooves relative to the axis of the centering surface shall not exceed, over a length of 100 mm:

0.03 mm - in high-precision joints with tolerances on size b from IT6 to IT8;

0.05 mm - in normal-precision joints with tolerances on size b from IT9 to IT10.

2.6. Recommendations for the inspection of spline joints are given in Appendix 2.

Example of the designation of a bushing of the same joint when centering on the internal diameter:

d - 8 × 36 H7 × 40 H12 × 7 H9

Same, for the shaft:

d - 8 × 36 f7 × 40 a11 × 7 f9.

(Revised edition, Amendment No. 2).

2.8. When it is necessary to ensure interchangeability in products designed before January 1, 1980, it is permitted to manufacture splined elements of parts in accordance with GOST 1139.

(Added, Amendment No. 1).

Recommended

RECOMMENDATIONS FOR THE INSPECTION OF SPLINE JOINTS

1. Spline joints are inspected using composite gauges, with element-by-element inspection carried out using go-no-go gauges or measuring instruments.

In disputed cases, inspection by composite gauge is decisive.

2. When using composite gauges, a bore is considered acceptable if the composite plug gauge passes and the diameters and groove width do not exceed the established upper limits; a shaft is considered acceptable if the composite ring gauge passes and the diameters and tooth thickness do not exceed the established lower limits.

3. Composite gauges shall comply with GOST 24960 - GOST 24968.

(Added, Amendment No. 2).

INFORMATIONAL DATA

1. DEVELOPED AND SUBMITTED BY the State Committee for Standards

2. APPROVED AND PUT INTO EFFECT by Resolution of the State Committee for Standards dated 03.06.80 No. 2516

3. The standard fully complies with ST SEV 6844-89

4. The standard complies with ISO 14-1982 with respect to nominal dimensions and tolerance fields for centering on the internal diameter

5. INTRODUCED FOR THE FIRST TIME

6. REFERENCE NORMATIVE-TECHNICAL DOCUMENTS

Designation of the referenced regulatory document	Clause/appendix number
GOST 24960-81	Appendix 2
GOST 24961-81	Appendix 2
GOST 24962-81	Appendix 2
GOST 24963-81	Appendix 2
GOST 24964-81	Appendix 2
GOST 24965-81	Appendix 2
GOST 24966-81	Appendix 2
GOST 24967-81	Appendix 2
GOST 24968-81	Appendix 2
GOST 25346-89	2.1
GOST 1139-58	2.8

5, 6 (Correction).

7. The expiration restriction was lifted by Resolution of Gosstandart dated 26.10.90 No. 2695

8. EDITION (July 2003) with Amendments No. 1, 2, approved in January 1982, October 1990 (IUS 3-82, 1-91)